/**
 * Copyright (c) 2014,Egret-Labs.org
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Egret-Labs.org nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGRET-LABS.ORG AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL EGRET-LABS.ORG AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
var egret;
(function (egret) {
    var gui;
    (function (gui) {
        /**
         * @class egret.gui.Keyframe
         * @classdesc
         * Keyframe 类用于定义位于效果过程中某个特定时间的属性的值。
         */
        var Keyframe = (function () {
            /**
             * @param time 以毫秒为单位的时间，此关键帧的效果目标应该在此时间处具有 value 参数指定的值。
             * @param value 效果目标在给定的 time 处应该具有的值。
             * @param valueBy 可选参数，如果提供该可选参数，
             * 则可以通过将 valueBy 与 MotionPath 对象的关键帧集合中的前一个关键帧的 value 相加来动态地计算 value。
             * 如果是序列中的第一个 Keyframe，则会忽略此值
             * @method egret.gui.Keyframe#constructor
             */
            function Keyframe(time, value, valueBy) {
                if (time === void 0) { time = NaN; }
                if (value === void 0) { value = null; }
                if (valueBy === void 0) { valueBy = null; }
                this.value = value;
                this.time = time;
                this.valueBy = valueBy;
            }
            var __egretProto__ = Keyframe.prototype;
            /**
             * 返回此 Keyframe 对象的副本。
             */
            __egretProto__.clone = function () {
                var kf = new Keyframe(this.time, this.value, this.valueBy);
                kf.easer = this.easer;
                kf._timeFraction = this._timeFraction;
                return kf;
            };
            return Keyframe;
        })();
        gui.Keyframe = Keyframe;
        Keyframe.prototype.__class__ = "egret.gui.Keyframe";
    })(gui = egret.gui || (egret.gui = {}));
})(egret || (egret = {}));
